BrandTech Scientific seripettor - Manual (Page 41)

a
b
c
f
English
Cleaning
41
Cleaning / replacing valves
seripettor ®
1.
Filling valve
a) Pull out the filling tube (fig. a).
b) Use a coin to unscrew the filling valve (fig. b) and remove the
filling valve body.
c) If the sealing ring is contaminated or damaged, carefully
remove it with a pair of curved forceps (fig. c).
d) If necessary, clean any contaminated individual parts
(e.g., in an ultrasonic bath).
e) Insert cleaned or new sealing ring.
f) Screw in the clean or replacement filling valve, first by hand,
and then tighten it with a coin (fig. f).
2.
Discharge valve
a) Loosen the discharge tube locking nut.
b) Remove the discharge valve.
c) If the sealing ring is contaminated or damaged, carefully
remove it with a pair of curved forceps.
d) If necessary, clean any contaminated individual parts
(e.g., in an ultrasonic bath).
e) Mount the discharge tube with cleaned or new discharge valve
(see page 33, fig. 1).